Checkline DFX-7 - Manual (Page 81)

DFX-7 Ultrasonic Flaw Detector
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3) Press the LEFT and RIGHT arrow keys to scroll the value. When the
correct brightness value is being displayed, proceed to step 8.
4) Alternatively, press the ENTER key to display the Digits Edit Box.
5) Press the UP and DOWN arrow keys to scroll the highlighted value.
6) Press the LEFT and RIGHT arrow keys to scroll the digit locations.
7) Repeat steps 5 & 6 until the brightness number is correctly displayed.
8) Press the OK key to set the brightness and return to the menu screen, or
ESC to cancel entering the brightness.
9) Finally, press the MEAS key to return to the measurement screen and begin
taking readings.
10.6 Color Scheme
The DFX-7 has a variety of display color options to select from. These will change
the look and feel of the according to the users preference. The procedures for
changing the VIEW, are outlined below:
Selecting a Color Scheme